Dayan has always been able to hit and is walk rate is much higher (not that that's saying a whole lot). I would rather keep him in Charlotte to work on his defense.
As for Mitchell, I said before that we should treat this like year one for him, and I stand by it. Then again, it might be a good thing for him to struggle this early, just to see if he can work his way out of this.

That is like two different types of players. One is a passive player who walks and strikes out a lot and hits for very little power. The other never walks but puts the ball in play with authority. He is like a lefty Viciedo now. That is an extra base hit every four at bats. It is reflected in where he hits in their lineup now. They moved him from first to fifth. This is a small sample size, but JorDanks has changed his approach. I am anxious to see if it lasts.

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Witness to the agony ('76 Sox season tix) and the ecstasy (2005 World Champions!)

That is like two different types of players. One is a passive player who walks and strikes out a lot and hits for very little power. The other never walks but puts the ball in play with authority. He is like a lefty Viciedo now. That is an extra base hit every four at bats. It is reflected in where he hits in their lineup now. They moved him from first to fifth. This is a small sample size, but JorDanks has changed his approach. I am anxious to see if it lasts.

Indeed. The power surge is noteworthy, but as you stated the sample size is still small with the strikeout reduction. I'm not excited just yet, but I will continue following his progress per usual.